Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-ray diffraction and thermal analysis of molybdenum(VI) oxide hemihydrate: monoclinic MoO3.1/2H2OR. L. Fellows, M. H. Lloyd, J. F. Knight, and H. L. YakelCite this: Inorg. Chem. 1983, 22, 17, 2468–2470Publication Date (Print):August 1, 1983Publication History Published onli…
The phonon spectral function for charge density wave (CDW) systems in the superconducting (SC) phase is calculated for finite wave vectors (q). An exact expression for the q dependent phonon self-energy is obtained. The analysis is carried out with a small q limit. The spectral function shows a two peak structure for…
Abstract The initiation and build‐up to detonation of Composition B covered by steel barrier plates and impacted by a shaped‐charge jet has been studied. Two different barrier thicknesses were used representing strong and weak shock initiating systems. The results showed that, in both cases, a shock (designated the pr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemical passivation of carrier recombination at acid interfaces and grain boundaries of p-indium phosphideAdam Heller, Harry J. Leamy, Barry Miller, and W. Dexter Johnston Jr.Cite this: J. Phys. Chem. 1983, 87, 17, 3239–3244Publication Date (Print):August 1, 1983Publication…
Abstract The miscibility of poly(vinyl chloride) (PVC) with various ethylene copolymers and terpolymers were investigated using FT‐IR spectroscopy. All blends reported were 50/50 by weight. In blends of PVC with ethylene/dimethyl acrylamide copolymer (E/DMA), frequency shifts were observed in the amide carbonyl (proto…
Results of studies are presented examining the effect of rotor speed, rotor diameter and tandem carding on properties of open-end (OE) yams. Most of the yam properties excepting strength show a significant deterioration with increase of rotor speed, in case of strength, no consistent trend was observed. Yarn elongatio…
The reversed-flow techniquc, uscd previously to measure gas diffusion cocfficicnts. hctcrogcncous catalysis of simple first-order reactions, and othcr processes, is now cxtcndcd to thc study of the kinetics of a morc conlplicatcd rcaction, nan~cly, the oxidation of carbon monoxide over solid catalysts containing Co304…
This report is concerned with the spinodal decomposition and magnetic properties of Fe–21∼30 Cr–12Co ternary alloys (by weight) as studied by transmission electron microscopy and magnetic measurements. Wavelength growth of the isothermally aged spinodal structure is found to be proportional to time1/3 for the later st…
In order to study the gelling mechanism of gelatin, the phase diagram for a diluted gelatin solution was investigated. Phase boundary curves were obtained by measuring the fluorescent depolarization, optical rotation, reduced viscosity, and light scattering of the gelatin solution. The phase diagram obtained exhibited…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfrared spectra of matrix-isolated metal complexes of octaethylporphineJames R. Kincaid, Marek W. Urban, Takeshi Watanabe, and Kazuo NakamotoCite this: J. Phys. Chem. 1983, 87, 16, 3096–3101Publication Date (Print):August 1, 1983Publication History Published online1 May 200…
Abstract not Available.
Abstract Two‐dimensional spherulite growth leads to the encirclement of regions of molten polymer in a polymer film. On further crystallization localized volume defects arise, resulting in thin spots in the film. Since this effect lowers the mechanical strength of films, we call these volume defects “weak spots.” A co…
Gallium is a metal that literally melts in your hand. It has low toxicity, near-zero vapor pressure, and a viscosity similar to water. Despite possessing a surface tension larger than any other liquid (near room temperature), gallium can form nonspherical ...Read More
Abstract A study was made of the ceric‐ammonium‐nitrate‐initiated graft polymerization of methyl methacrylate (MMA) onto a lineal fraction of starch (amylose). Grafting yields were determined by extraction with appropriate solvents: 1,2‐dichloroethane for homo‐PMM, and 0.5 N NaOH for ungrafted amylose. Percent graftin…
The refractive indices of LiF and MgF2 have been measured with an accuracy better than ±0.003 from 200 nm down to their respective cutoff wavelengths for various temperatures ranging from 80 to 300 K. For LiF, the temperature coefficient changes sign at 160 nm. The data were fitted to a two-term dispersion equation. T…
The nucleation of diopside and anorthite is always delayed under supercooled conditions. The delay in nucleation decreases with increasing degree of supercooling or increasing cooling rate. With further increase in the degree of supercooling or the cooling rate, the delay in anorthite nucleation increases. For a given…
The polypeptide chain of the allosteric L-lactate dehydrogenase (EC 1.1.1.27) of Lactobacillus casei consists of 325 amino acid residues. Despite the strikingly different enzymatic characteristics of the allosteric L-lactate dehydrogenase of L. casei and of the non-allosteric vertebrate enzymes, the sequence of the al…
Abstract As in the two‐dimensional case, the density change due to crystallization leads to a buildup of internal strain in some regions of a polymer melt occluded by growing spherulites. The occluded parts of the sample are called “weak spots.” Computer simulation of spherulite growth in bulk samples shows that the l…
Negatively stained sarcoplasmic reticulum from the scallop Placopecten magellanicus presented a variety of crystalline forms, the most common being tubular structures. These were characterized by paired rows of morphological units, spaced at approximately 120 A, running diagonally across the tubules. The orthogonal un…
The crystal structure of the title compound, [CO(C15H11N3)2](ClO4)2.c. 1.3H2O has been determined by single crystal X-ray diffraction methods at 295 K. The structure is described in terms of atetragonal P 42/ n sub-lattice structure similar to that of [Co(terpy)2]I2.2H2O, with a 8.86(1), c 20.19(2) Å. Perchlorate orie…